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PDF TA32305FN Data sheet ( Hoja de datos )
| Número de pieza | TA32305FN | |
| Descripción | RF 1chip Receiver and Transmitter | |
| Fabricantes | Toshiba Semiconductor | |
| Logotipo |  |
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TA32305FN/FNG
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA32305FN/TA32305FNG*
RF 1chip Receiver and Transmitter for low power wireless
The TA32305FN is an RF 1 chip receiver and transmitter IC.
Receiver is for AM/FM radio.
The IC incorporates an RF amp, 2-level comparator, and local
×8 circuit.
This IC’s main use is remote control.
Features
• RF frequency: 240 to 450 MHz (multiplication is used)
www.DataS••heeIOFtp4efUrrea.qtcuionemgncvyo:lt8a0gekHraznge: 2.2 to 5.5 V
• Current dissipation: TX 4.3 mA/ RX 5.6 mA (FM), 5.3 mA (AM)
(except current at oscillator circuit)
• Current dissipation at BS: 0 µA (typ.)
• Small package: 30-pin SSOP (0.65 mm pitch)
Block Diagram
SSOP30-P-300-0.65
Weight: 0.17 g (typ)
SAW
30 29
RX TX
DATA DATA
28 27 26 25
RX TX LPF LPF
OUT IN
Comparator
24 23 22 21 20 19 18 17 16
AF RSSI REF GND1 MIX
OUT
RSSI
IN
RF CHARGE RF RF
OUT
DEC IN
×8
OSC
IN VCC1
12
MIX
U/L OUT
34
IFF IFF
IN OUT
56
Detector
IF TX AM/ TX
Vcc2 IF IN GND2 OUT QUAD Vcc3 Power FM OUT
7 8 9 10 11 12 13 14 15
*: TA32305FNG Package is Pb-Free.
1
2003-12-04
1 page  
Pin No. Pin Name
Function
28 RX
Battery saving pin for receiver.
TA32305FN/FNG
Internal Equivalent Circuit
30 kΩ
28
29 TX DATA
AM modulation switch for transmitter.
L : Output ON
H : Output FF
97 kΩ
28
www.DataSheet4U.com
30 RX DATA
FM/AM waveform shaping output pin for
receiver.
Open collector output.
Connect a pull-up resistor.
30
2 kΩ
Equivalent circuits are given to help understand design of the external circuits to be connected. They do not
accurately represent the internal circuits.
5 2003-12-04
5 Page 
TA32305FN/FNG
Cautions for Designing Circuit Board Patterns
Observe the following cautions when designing circuit patterns for this product.
Local Oscillator Circuit (pin 1)
Isolate the local oscillator circuit block sufficiently from the RF amp block.
Isolate the local oscillator circuit block securely so that its output will not get in the IF input, IF filter, or
mixer input.
Do not place the local oscillator circuit block too close to the ceramic filter.
Subdivide the ground pattern for the local oscillator circuit block, and connect the subdivisions with thin
lines.
IF Input and Output Block (pin 8, 10)
Isolate the input from output patterns of the IF filter and detector block securely from each other.
Demodulator Circuit Block (pin 11)
Isolate the demodulator circuit block sufficiently from the IF input block (pin 8).
www.DataSheet4DUo.cnoomt place the LC too close to the IC device.
Data Output Block (pin 30)
Isolate the data output block sufficiently from the IF input block (pin 8).
Isolate the output pattern of the data output block from other circuits as much as possible, so any noise from
a stage subsequent to the output will not affect them.
RF Amp Circuit Block
1) Preventing RF amp oscillation
Do not place the patterns connected to pins 16 and 17 too close to each other.
Isolate the patterns connected to the input block (pin 16) and output block (pin 19) from each other.
Make the RF input signal line relatively thin.
Place a relatively wide ground pattern between the RF-IN pin (pin 16) and RF-DEC pin (pin 17).
Connect the RF-OUT pin (pin 19) and MIX-IN pin (pin 20) with the shortest possible pattern.
2) Attaining a sufficient gain
To attain a sufficient RF amp gain, select an optimum value for the input matching circuit block (pin 16)
according to the board circuit pattern.
3) Sharing antenna with receiver and transmitter
Using hi power application, place the patterns connected to SAW filter and pin 15 close.
IC Mounting Area
Provide a ground pattern under the IC device, and prepare relatively many through holes.
Cautions for mounting
Mount better accurate constants of capacitance in IF filter block and detector block.
11 2003-12-04
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet TA32305FN.PDF ] | |
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